Quite a few messages on this forum have spelled out problems with Dropbox under Ventura: the main one being that macOS Spotlight won't open files in the new ~/Library/CloudStorage/Dropbox folder. I've found a new problem:
For the past few days, Dropbox kept showing the "Syncing" message in the app and the syncing badge in the menubar icon. I tried shutting down, restarting, etc. Nothing worked. Finally I uninstalled Dropbox, partly following this page:
https://help.dropbox.com/installs/advanced-reinstall
But that page doesn't match the new macOS version of Dropbox, so I ran the Find Any File app and searched for all files with Dropbox in their names (including hidden files) and trashed all of them, then ran Onyx to clean out my system, restarted, and reinstalled Dropbox.
This time, however, I used Bartender to hide the Dropbox icon with the red "1" on it, and did NOT let Dropbox update and move the Dropbox folder to ~/Library/CloudStorage.
Now, macOS Spotlight and find and open files in my ~/Dropbox folder, and all is well.
But this latest version of Dropbox for macOS is a total disaster, and Dropbox should refund a year's subscription for everyone who has wasted time and effort trying to get it right. This is really a disgraceful failure on Dropbox's part.